JP5070322B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner provided with a cyclone type dust collector.

  A conventional vacuum cleaner is disclosed in Patent Document 1. This vacuum cleaner is provided with a detachable dust collecting device in a main body part equipped with an electric blower. The dust collector is provided with a cylindrical dust collecting container in which a swirling airflow is formed, and a filter such as a pleated filter for collecting dust is provided downstream of the dust collecting container.

  The filter is held by a frame and is rotatably supported with the axial direction horizontally arranged in a storage case having a circular cross section. The frame is provided with a wiper (sweeping member) that slides on an end face in the axial direction of the storage case. The storage case is provided with a dust removing portion that taps the filter to remove dust when the filter rotates.

  In addition, an opening that communicates with the peripheral surface of the dust collecting container is provided at an upper portion of the end surface of the storage case. The opening is covered with a lid that is urged in one direction, and the lid is configured to open the opening against the urging force by the contact of the wiper.

  In the vacuum cleaner having the above configuration, when the electric blower is driven, the dust on the surface to be cleaned is sucked, and the air flow containing the dust flows into the dust collecting container to form a swirling air flow in the dust collecting container. At this time, the wiper is retracted from the lid and the opening is closed. Dust contained in the airflow is separated by centrifugal force and stored in a dust collection container. The airflow from which the dust has been removed flows out of the dust collecting container, and fine dust is collected by the filter. And the airflow from which the dust was removed is exhausted through the electric blower.

  When the electric blower is stopped and the filter is rotated by a predetermined operation, dust is dropped from the filter to the bottom of the storage case by tapping the dust removing portion. The wiper that rotates integrally with the filter scoops up dust at the bottom of the storage case and guides it to the opening. When the rotation of the wiper is stopped at a position where the wiper comes into contact with the lid, the opening is opened, and the dust scraped up by the wiper falls into the dust collecting container through the opening. Thereby, the dust removed from the filter can be collected in the dust collecting container.

Japanese Patent No. 3990419 (pages 4 to 12, FIG. 22)

  However, according to the above-described conventional vacuum cleaner, since the airflow flows backward when the opening is opened during cleaning, it is necessary to retract the wiper from the lid and close the opening. Further, when removing the dust from the filter, it is necessary to open the opening by arranging the wiper at a position where it comes into contact with the lid. For this reason, it is necessary to control the rotational position of the wiper, and there is a problem that the structure of the vacuum cleaner is complicated.

  An object of this invention is to provide the vacuum cleaner which can collect | recover the dust at the time of dust removal of a filter with a simple structure.

  In order to achieve the above object, the present invention provides a vacuum cleaner in which a cyclone-type dust collector is provided in a main body that houses an electric blower, wherein the dust collector is a cylindrical dust collector in which a swirling airflow is formed. A container, an inner cylinder that is arranged at the center of the dust container and guides the airflow flowing out of the dust container upward, covers an upper surface of the dust container on the outer peripheral side of the inner cylinder, and has an opening. A shielding part to be formed; a filter disposed above the shielding part for collecting dust; a dust removing part for removing dust from the filter and dropping the dust on an upper surface of the shielding part; and the shielding by a predetermined operation. A wiper that slides on the upper surface of the part and guides dust to the opening, and is pivotally supported on the lower surface of the shielding part, and closes the opening by suction when the electric blower is driven, and is self-weighted when the electric blower is stopped. Open the opening by the lid It is characterized by comprising and.

  According to this configuration, when cleaning is performed by a vacuum cleaner, an air flow including dust flows into the dust collecting container of the dust collecting device whose upper surface is blocked by the shielding portion, and a swirling air flow is formed in the dust collecting container. . At this time, the lid part pivotally supported on the lower surface of the shielding part closes the opening by the suction force of the vacuum cleaner. The relatively large dust contained in the swirling airflow in the dust collecting container is separated by the centrifugal force and falls off. The airflow flowing out from the dust collecting container is guided to the upper filter through the inner cylinder. The filter collects fine dust, and the airflow from which the dust has been removed is exhausted outside the main body. When the electric blower is stopped, the lid part opens the opening part by its own weight. When the filter is removed by the dust removing unit, the dust falls from the filter to the upper surface of the shielding unit. When the wiper is slid on the upper surface of the shielding portion by a predetermined operation, dust on the upper surface of the shielding portion falls into the dust collecting container through the opening. Thereby, dust can be collected in the dust collecting container by removing the filter dust.

  Further, the present invention is characterized in that, in the vacuum cleaner configured as described above, the inflow port is disposed at a front portion of the dust collector and the opening is disposed at a rear portion of the dust collector. According to this configuration, the inflow port and the lid portion are arranged apart from each other in the circumferential direction, and the opening of the lid portion due to the airflow flowing into the dust collecting container from the inflow port is prevented.

  Moreover, the present invention is characterized in that, in the electric vacuum cleaner having the above configuration, the lid portion is pivotally supported by the shielding portion at a front end. According to this configuration, the lid is provided with the pivot shaft on the inner peripheral side with respect to the open end, and a large opening can be formed in the circular shielding portion in plan view. Further, when the main body portion is erected so that the front portion is disposed upward, the lid portion is suspended with the pivot shaft disposed upward. As a result, the lid closes the opening and the outflow of dust from the dust collecting container is prevented.

  According to the present invention, in the electric vacuum cleaner having the above-described configuration, the dust collector is disposed on the main body portion so as to be inclined so that a rear portion of the shielding portion is lowered. According to this structure, the dust on the upper surface of the shielding part slides down to the rear opening, and the dust can be collected more efficiently.

  Further, the present invention is characterized in that, in the vacuum cleaner having the above-described configuration, an annular protrusion is provided on the inner edge of the upper surface of the shielding part, and the wiper slides on the outer peripheral side of the protrusion. According to this configuration, the wiper slides on the outer peripheral side of the protrusion, and the dust guided to the opening is prevented from dropping onto the inner cylinder. This prevents dust that has fallen into the inner cylinder from being guided to the filter when the electric blower is driven.

  According to the present invention, the lid part pivotally supported on the lower surface of the shielding part closes the opening part by suction when the electric blower is driven, and opens the opening part by its own weight when the electric blower is stopped. It is possible to prevent leakage and collect dust due to filter dust removal.

The perspective view which shows the vacuum cleaner of embodiment of this invention Side surface sectional drawing which shows the main-body part of the vacuum cleaner of embodiment of this invention Side surface sectional drawing which shows the dust collector of the vacuum cleaner of embodiment of this invention The perspective view which shows the filter holding part of the dust collector of the vacuum cleaner of embodiment of this invention The disassembled perspective view which shows the inner cylinder part of the dust collector of the vacuum cleaner of embodiment of this invention The top view which shows the inner cylinder part of the dust collector of the vacuum cleaner of embodiment of this invention Side surface sectional drawing which shows the state which opened the cover part of the dust collector of the vacuum cleaner of embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a vacuum cleaner according to an embodiment. The vacuum cleaner 1 includes a main body 2 that houses an electric blower 6 (see FIG. 2). A power cord 8 that can be pulled out and stored is provided on the back surface of the main body 2. The power cord 8 has a power plug 9 at its tip, and is supplied to the main unit 2 by being inserted into a commercial power outlet.

  A flexible connection hose 3 is connected to the front surface of the main body 2, and an extension pipe 4 is connected to the tip of the connection hose 3. A suction port body 5 having a suction port (not shown) facing the floor surface is provided at the tip of the extension pipe 4. The extension pipe 4 is provided with a gripping portion 13 and an operation portion 14. The user operates the operation unit 14 to perform a cleaning operation, grips the grip 13 and moves the suction port body 5.

  FIG. 2 shows a side sectional view of the main body 2. The main body 2 is provided with an electric blower 6 at the rear, and an exhaust port 7 is opened behind the electric blower 6. A dust collecting chamber 19 is provided in front of the electric blower 6, and a detachable dust collecting device 20 is disposed in the dust collecting chamber 19. The dust collector 20 includes a cylindrical dust collecting container 22 that collects dust, and is disposed with an inclined central axis so that a rear portion of a shielding portion 52 described later is lowered.

  An inlet 21 through which airflow from the connection hose 3 (see FIG. 1) flows is provided at the front of the dust collector 20. A dust collector exhaust port 24 through which airflow from which dust has been removed flows out is provided on the upper rear surface of the dust collector 20. The dust collector exhaust port 24 and the electric blower 6 are connected by a duct 15.

  FIG. 3 shows a side sectional view of the dust collector 20. In the dust collector 20, a cover portion 40 that covers the dust collection chamber 19 and forms the upper surface of the main body 2 (see FIG. 1) is disposed at the upper portion, and a dust collection container 22 that collects dust is disposed at the lower portion. A filter holding unit 30 that holds the filter 37 is engaged below the cover unit 40. An inner cylinder portion 50 having an inner cylinder 51 disposed in the dust collecting container 22 is engaged below the filter holding portion 30.

  The dust collection container 22 is formed in a cylindrical shape having a substantially circular cross section with an open upper surface, and the inflow port 21 is provided so as to allow airflow to flow in the circumferential tangential direction from the front portion of the dust collection container 22. Thereby, a swirling airflow is formed in the dust collecting container 22.

  A circular handle 41 in a plan view is rotatably provided on the upper surface of the cover portion 40, and a dust collector exhaust port 24 opens behind the handle 41. The dust collector 20 can be attached to and detached from the main body 2 by grasping the handle 41.

  The filter 37 is formed by a circular pleated filter or the like in plan view, and is formed by bending so that a crest and a trough are continuous in the circumferential direction at a predetermined angular interval. Thereby, the collection area of the filter 37 is expanded.

  FIG. 4 is a perspective view of the filter holding unit 30. The filter holding part 30 has a frame 39 that is integrated with the filter 37 and is engaged with the inner cylinder part 50 (see FIG. 3). The frame 39 covers the periphery of the filter 37. The frame body 39 is rotatably provided with a dust removal rotating body 31 fitted to the shaft portion 39a.

  The dust removal rotary body 31 is connected to the handle 41 (see FIG. 3) via the clutch portion 42 (see FIG. 3). The dust removing rotator 31 rotates integrally with the handle 41 in one direction by the clutch portion 42 and is restricted from rotating in the other direction. Further, the connection with the handle 41 is released, and the dust removing rotator 31 is rotatable in one direction.

  A gear 32 is provided on the peripheral surface of the dust removal rotating body 31. The gear 32 meshes with a motor gear 33a (see FIG. 6) of a dust removal motor 33 (see FIG. 6) through a window 39b provided in the frame 39. As a result, the dust removal rotating body 31 rotates in one direction by driving the dust removal motor 33 and also rotates in the same direction by operating the handle 41.

  A plurality of dust removing portions 38 (see FIG. 3) disposed above the filter 37 are provided on the upper portion of the dust removal rotating body 31. The dust removing portion 38 is formed of an elastic body and extends downward to a position exceeding the peak portion of the filter 37. When the dust removal rotating body 31 rotates, the dust removal portion 38 rotates integrally, and the crest portions of the filter 37 are beaten in order. Thereby, the filter 37 can be vibrated and the dust adhering to the surface of the filter 37 can be removed and dropped.

  A plurality of wipers 36 extending in the radial direction and provided below the filter 37 are provided below the dust removal rotating body 31. The wiper 36 is provided with a flexible member 36a such as synthetic rubber at the lower end, and slides on a shielding portion 52 (see FIG. 3) of the inner cylinder portion 50 to be described later by the rotation of the dust removing rotator 31. An engaging portion 36 b is provided to protrude from the lower surface on the inner peripheral side of the wiper 36.

  5 and 6 show an exploded perspective view and a top view of the inner cylinder portion 50. 3, 5, and 6, the inner cylinder portion 50 has an inner cylinder 51 that is coaxially disposed at the center of the dust collection container 22, and the upper end of the inner cylinder 51 extends to the outer peripheral side and extends to the outer periphery side. The shielding part 52 which covers the upper surface of 22 is provided. The inner cylinder 51 is provided with an airflow outlet 51a on the peripheral surface. The shielding portion 52 is provided with an annular portion 52c that forms an airflow passage at the periphery of the upper surface 52a. The airflow flowing out from the dust collecting container 22 through the outlet 51a ascends the inner cylinder 51 and is guided to the filter 37 through the annular portion 52c.

  The upper surface 52a of the shielding part 52 is formed as an inclined surface formed of a conical surface whose inner peripheral side is lowered, and dust that has dropped out due to dust removal by the filter 37 accumulates. An annular protrusion 52e protruding upward is formed on the inner peripheral edge of the upper surface 52a of the shielding part 52. In the rear part of the shielding part 52, an opening part 52d opens on the outer peripheral side of the protrusion part 52e.

  The opening 52d is opened and closed by a lid 53 that is pivotally supported by a disc 52b that forms the lower surface of the shield 52. A pivot shaft 53 a of the lid portion 53 is provided at the front end of the lid portion 53. Accordingly, the lid 53 is provided with the pivot shaft 53a on the inner peripheral side with respect to the open end, and a large opening 52d can be formed in the shield 52 having a circular shape in plan view. A packing 53b is provided on the periphery of the lid 53 by insert molding or the like, and prevents airflow leakage when the opening 52d is closed. A packing may be provided on the periphery of the opening 52d.

  The wiper 36 is disposed inside the annular portion 52c, and the flexible member 36a slides on the upper surface 52a of the shielding portion 52 by rotation. As a result, the dust that has fallen onto the upper surface 52a of the shield 52 can be guided to the opening 52d. At this time, the wiper 36 slides on the outer peripheral side of the protrusion 52e, and can prevent dust from falling into the inner cylinder 51.

  The shaft portion 55 b of the compression portion 55 is fitted to the inner cylinder 51. At the lower part of the compression portion 55, a spiral flange portion 55a protruding in the radial direction is provided. In the compression portion 55, an engaging portion (not shown) provided at the upper end of the shaft portion 55 b engages with the engaging portion 36 b of the wiper 36 and rotates integrally with the wiper 36. The dust accumulated in the lower part of the dust collecting container 22 by the rotation of the compression part 55 is compressed by the feeding action of the flange part 55a.

  In the vacuum cleaner 1 having the above configuration, the dust on the surface to be cleaned is sucked from the suction port body 5 by driving the electric blower 6 and flows through the extension pipe 4 and the connection hose 3. The airflow containing dust flows into the dust collecting container 22 from the inlet 21, and forms a swirling airflow in the dust collecting container 22. At this time, the lid part 53 closes the opening part 52 d of the shielding part 52 by the suction of the electric blower 6. The relatively large dust contained in the airflow is removed by the centrifugal force of the swirling airflow, and accumulates on the bottom of the dust collecting container 22.

  The airflow from which the large dust has been removed flows out from the outlet 51 a into the inner cylinder 51 and rises, and fine dust is collected by the filter 37. The airflow that has passed through the filter 37 flows out of the dust collector 20 through the dust collector exhaust port 24. The airflow flowing out from the dust collector 20 flows through the duct 15 and is exhausted from the exhaust port 7 via the electric blower 6.

  When the electric blower 6 is stopped by operating the operation unit 14, the dust removal motor 33 of the dust removal device 30 is driven for a predetermined time. At this time, as shown in FIG. 7, the open end of the lid 53 is suspended from the pivot shaft 53a by its own weight, and the opening 52d of the shield 52 is opened. The dust removal rotating body 31 is rotated through the gear 32 by the drive of the dust removal motor 33. At this time, the connection between the handle 41 and the dust removal rotary body 31 by the clutch portion 42 is released, and the rotation of the handle 41 is prevented.

  The dust removing unit 38 strikes the filter 37 by the rotation of the dust removing rotating body 31, and the dust collected by the filter 37 is removed and falls onto the upper surface 52 a of the shielding unit 52. At this time, the dust on the upper surface 52 a of the shielding part 52 is guided to the opening 52 d by the wiper 36 and collected in the dust collecting container 22.

  Further, due to the rotation of the dust removal rotating body 31, the engaging portion 36b of the wiper 36 is engaged with the compressing portion 55, and the compressing portion 55 is rotated. By the rotation of the compression unit 55, the flange portion 55 a compresses dust at the bottom of the dust collection container 22.

  When the dust collector 20 is detached from the dust collection chamber 19 and the handle 41 is rotated, the dust removing rotator 31 is rotated through the clutch portion 42 and the filter 37 is removed. The dust that has fallen on the upper surface 52a of the shielding part 52 is collected by the wiper 36 into the dust collecting container 22 through the opening 52d.

  According to this embodiment, the lid portion 53 pivotally supported on the lower surface of the shielding portion 52 closes the opening portion 52d by suction when the electric blower 6 is driven, and opens the opening portion 52d by its own weight when the electric blower 6 is stopped. With a simple structure, it is possible to prevent airflow leakage at the time of cleaning and collect dust due to dust removal of the filter 37.

  Moreover, since the inlet 21 is arrange | positioned in the front part of the dust collector 20, and the opening part 52d is arrange | positioned in the rear part of the dust collector 20, the inlet 21 and the cover part 53 are arrange | positioned away in the circumferential direction. . Thereby, opening of the cover part 53 by the airflow which flows in into the dust collecting container 22 from the inflow port 21 can be prevented. Therefore, airflow leakage during cleaning can be reliably prevented.

  Further, since the lid portion 53 disposed at the rear portion of the dust collector 20 is pivotally supported by the shielding portion 52 at the front end, the pivot shaft 53a is disposed on the inner peripheral side of the lid portion 52 with respect to the open end. Thereby, the large opening part 52d can be formed in the shielding part 52 circular in plan view. Further, when the main body 2 is erected so that the front portion is disposed upward, the lid portion 53 is suspended with the pivot shaft 53a disposed upward. Thereby, the cover part 53 can close the opening part 52d, and can prevent the outflow of dust from the dust collecting container 22.

  Further, since the dust collector 20 is disposed on the main body 2 so as to be inclined so that the rear part of the shielding part 52 is lowered, the dust on the upper surface 52a of the shielding part 52 slides down to the opening part 52d on the rear part to make the dust more efficient. It can be recovered well.

  Further, an annular protrusion 52e is provided on the inner edge of the upper surface 52a of the shielding part 52, and the wiper 36 slides on the outer peripheral side of the protrusion 52e, so that the dust guided to the opening 52d is prevented from falling onto the inner cylinder 51. Is done. Thereby, it is possible to prevent the dust falling on the inner cylinder 52 from being guided to the filter 36 again when the electric blower 6 is driven, and to reliably collect the dust in the dust collecting container 22.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the vacuum cleaner provided with the cyclone type dust collector.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Main part 3 Connection hose 4 Extension pipe 5 Suction port body 6 Electric blower 7 Exhaust port 14 Operation part 15 Duct 19 Dust collection chamber 20 Dust collector 21 Inflow port 22 Dust collector 24 Dust collector exhaust port 30 Filter holding part 31 Dust removal rotary body 32 Gear 33 Dust removal motor 36 Wiper 37 Filter 38 Dust removal part 39 Frame body 40 Cover part 41 Handle 42 Clutch part 50 Inner cylinder part 51 Inner cylinder 51a Outlet 52 Shield part 52a Upper surface 52b Lower surface 52d Opening part 53 Lid 55 Compression unit

Claims (5)

  In a vacuum cleaner provided with a cyclone-type dust collector in a main body that houses an electric blower, the dust collector is provided in a cylindrical dust container in which a swirling airflow is formed, and a central part of the dust container. An inner cylinder that is disposed and guides the airflow flowing out of the dust collecting container upward, a shielding part that covers an upper surface of the dust collecting container on the outer peripheral side of the inner cylinder and that has an opening, and A filter disposed above to collect dust, a dust removing unit that removes the filter to remove dust on the upper surface of the shielding unit, and slides on the upper surface of the shielding unit by a predetermined operation to remove the dust. A wiper that leads to the opening, and a lid that is pivotally supported on the lower surface of the shield and closes the opening by suction when the electric blower is driven and opens the opening by its own weight when the electric blower stops Electric sweeping characterized by Machine.   The vacuum cleaner according to claim 1, wherein the inlet is disposed at a front portion of the dust collector and the opening is disposed at a rear portion of the dust collector.   The electric vacuum cleaner according to claim 2, wherein the lid portion is pivotally supported by the shielding portion at a front end.   4. The vacuum cleaner according to claim 2, wherein the dust collecting device is disposed on the main body portion so as to be inclined such that a rear portion of the shielding portion is lowered. 5.   The vacuum cleaner according to any one of claims 1 to 4, wherein an annular protrusion is provided on an inner edge of the upper surface of the shielding part, and the wiper slides on an outer peripheral side of the protrusion.

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